CVE-2026-72351

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Source
https://cve.org/CVERecord?id=CVE-2026-72351
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-72351.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-72351
Downstream
Published
2026-08-15T05:55:54.150Z
Modified
2026-08-18T03:56:24.225775002Z
Severity
  • 9.8 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
gue: validate REMCSUM private option length
Details

In the Linux kernel, the following vulnerability has been resolved:

gue: validate REMCSUM private option length

GUE private flags can indicate that remote checksum offload metadata is present. The private flags field itself is accounted for by guehdrflagslen(), but guehdrprivflagslen() currently returns 0 even when GUEPFLAG_REMCSUM is set.

This lets a packet with only the private flags field pass validategueflags(), after which gueremcsum() and guegro_remcsum() read the missing REMCSUM start/offset fields from the following bytes.

Account for GUEPLENREMCSUM when GUEPFLAGREMCSUM is present so that malformed packets are rejected during option validation.

Database specific 
{
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72351.json"
}
References

Affected packages

Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Affected ranges

Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
c1aa8347e73e4092411fbd96cc59531fb7e76d04
Fixed
158b9995d3c87f3b93f5c22df54a12e12a3438b3
Fixed
7c6876ec1b227261b51803f784c7be1b2242a1a0
Fixed
2c4de9988e9ddc760b750d6b6e701c35ff60ad14
Fixed
2a99224c120823987e4d829726f4ecb33e03fc1e
Fixed
61e78679c7c9ca685bff58e4b6348304dc60aafd
Fixed
4a4a1d41c6e901e773bcf795f562a47fa71f692a
Fixed
f618cbe9b24cd0202004d2db781d5f80ab77037f
Fixed
d335dcc6f521571d57117b8deeebc940836e5450

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-72351.json"

Linux / Kernel

Package

Name
Kernel

Affected ranges

Type
ECOSYSTEM
Events
Introduced
3.19.0
Fixed
5.10.261
Type
ECOSYSTEM
Events
Introduced
5.11.0
Fixed
5.15.212
Type
ECOSYSTEM
Events
Introduced
5.16.0
Fixed
6.1.178
Type
ECOSYSTEM
Events
Introduced
6.2.0
Fixed
6.6.145
Type
ECOSYSTEM
Events
Introduced
6.7.0
Fixed
6.12.97
Type
ECOSYSTEM
Events
Introduced
6.13.0
Fixed
6.18.40
Type
ECOSYSTEM
Events
Introduced
6.19.0
Fixed
7.1.5

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-72351.json"